20408964910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1901}}^1\times {\mathrm{15121}}^1$

素因数の和:17100

約数の個数: 32

約数和(自身を含む): 37275609024

約数和(自身を除く): 16866644114

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1901, 3802, 9505, 15121, 19010, 30242, 75605, 134971, 151210, 269942, 674855, 1073591, 1349710, 2147182, 5367955, 10735910, 28745021, 57490042, 143725105, 287450210, 2040896491, 4081792982, 10204482455, 20408964910]

約数ペア:

[(1, 20408964910), (2, 10204482455), (5, 4081792982), (10, 2040896491), (71, 287450210), (142, 143725105), (355, 57490042), (710, 28745021), (1901, 10735910), (3802, 5367955), (9505, 2147182), (15121, 1349710), (19010, 1073591), (30242, 674855), (75605, 269942), (134971, 151210)]